asyncrat | 9092ddc14431abcaa0467e6c56bdb73c1bc77c6a8e0a77f5b12d95717c47aef5

Analysis

max time kernel
141s
max time network
146s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/04/2024, 18:04

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General

Target

87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe
Size

69KB
MD5

1bcc48211ca31660a585b931eb987f93
SHA1

6633d480598a27f756a8ce706e4392b294ccc8ec
SHA256

87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347
SHA512

7704148f1e83bf97e8a6ff7f36b7fc56dee6a2175be55f1c8c9a2629a66d4d19635bfa03a7f4c92b7cbf4fbd27b014a2a2fa58dcc734fd560dab0a9977b3cf86
SSDEEP

1536:Ju4n9Tswb2ksLtF3buXSumtVoGB7dTxYIbdS6w:Ju49Tswb2VLtF3bugbhJxYIbML

Score

10^/10

asyncrat default evasion rat trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

94.156.68.217:3162

Mutex

sz1D8OiE4OiM

Attributes

delay
3
install
true
install_file
MicrosoftCompabilityTelemtry.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchosts.exe

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000b00000001224d-9.dat	family_asyncrat

Executes dropped EXE 3 IoCs

pid	Process
2492	MicrosoftCompabilityTelemtry.exe
2592	svchosts.exe
284	MicrosoftCompabilityTelemtry.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	cmd.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchosts.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchosts.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	discord.com
5	discord.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2448	schtasks.exe
1792	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2464	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2492	MicrosoftCompabilityTelemtry.exe
2492	MicrosoftCompabilityTelemtry.exe
2492	MicrosoftCompabilityTelemtry.exe
1604	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2592	svchosts.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2592	svchosts.exe
Token: SeDebugPrivilege	2492	MicrosoftCompabilityTelemtry.exe
Token: SeDebugPrivilege	1604	powershell.exe
Token: SeDebugPrivilege	284	MicrosoftCompabilityTelemtry.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2492	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	28
PID 2208 wrote to memory of 2492	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	28
PID 2208 wrote to memory of 2492	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	28
PID 2208 wrote to memory of 2492	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	28
PID 2208 wrote to memory of 2592	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	29
PID 2208 wrote to memory of 2592	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	29
PID 2208 wrote to memory of 2592	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	29
PID 2208 wrote to memory of 2592	2208	87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe	29
PID 2492 wrote to memory of 2524	2492	MicrosoftCompabilityTelemtry.exe	30
PID 2492 wrote to memory of 2524	2492	MicrosoftCompabilityTelemtry.exe	30
PID 2492 wrote to memory of 2524	2492	MicrosoftCompabilityTelemtry.exe	30
PID 2492 wrote to memory of 2524	2492	MicrosoftCompabilityTelemtry.exe	30
PID 2492 wrote to memory of 2380	2492	MicrosoftCompabilityTelemtry.exe	32
PID 2492 wrote to memory of 2380	2492	MicrosoftCompabilityTelemtry.exe	32
PID 2492 wrote to memory of 2380	2492	MicrosoftCompabilityTelemtry.exe	32
PID 2492 wrote to memory of 2380	2492	MicrosoftCompabilityTelemtry.exe	32
PID 2524 wrote to memory of 2448	2524	cmd.exe	34
PID 2524 wrote to memory of 2448	2524	cmd.exe	34
PID 2524 wrote to memory of 2448	2524	cmd.exe	34
PID 2524 wrote to memory of 2448	2524	cmd.exe	34
PID 2380 wrote to memory of 2464	2380	cmd.exe	35
PID 2380 wrote to memory of 2464	2380	cmd.exe	35
PID 2380 wrote to memory of 2464	2380	cmd.exe	35
PID 2380 wrote to memory of 2464	2380	cmd.exe	35
PID 2592 wrote to memory of 1628	2592	svchosts.exe	36
PID 2592 wrote to memory of 1628	2592	svchosts.exe	36
PID 2592 wrote to memory of 1628	2592	svchosts.exe	36
PID 2592 wrote to memory of 1628	2592	svchosts.exe	36
PID 2592 wrote to memory of 1568	2592	svchosts.exe	38
PID 2592 wrote to memory of 1568	2592	svchosts.exe	38
PID 2592 wrote to memory of 1568	2592	svchosts.exe	38
PID 2592 wrote to memory of 1568	2592	svchosts.exe	38
PID 1628 wrote to memory of 1604	1628	cmd.exe	40
PID 1628 wrote to memory of 1604	1628	cmd.exe	40
PID 1628 wrote to memory of 1604	1628	cmd.exe	40
PID 1628 wrote to memory of 1604	1628	cmd.exe	40
PID 1568 wrote to memory of 1792	1568	cmd.exe	41
PID 1568 wrote to memory of 1792	1568	cmd.exe	41
PID 1568 wrote to memory of 1792	1568	cmd.exe	41
PID 1568 wrote to memory of 1792	1568	cmd.exe	41
PID 2380 wrote to memory of 284	2380	cmd.exe	42
PID 2380 wrote to memory of 284	2380	cmd.exe	42
PID 2380 wrote to memory of 284	2380	cmd.exe	42
PID 2380 wrote to memory of 284	2380	cmd.exe	42

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchosts.exe

C:\Users\Admin\AppData\Local\Temp\87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe
"C:\Users\Admin\AppData\Local\Temp\87e382fef7c2e0010af6532600c22578d26d041a78a1c3ec16dbf0d5eb39f347.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\MicrosoftCompabilityTelemtry.exe
  "C:\Users\Admin\AppData\Local\Temp\MicrosoftCompabilityTelemtry.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftCompabilityTelemtry" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftCompabilityTelemtry.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2524
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftCompabilityTelemtry" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftCompabilityTelemtry.exe"'
      4⤵
      Creates scheduled task(s)
      PID:2448
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1890.tmp.bat""
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2380
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2464
  - - C:\Users\Admin\AppData\Roaming\MicrosoftCompabilityTelemtry.exe
      "C:\Users\Admin\AppData\Roaming\MicrosoftCompabilityTelemtry.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:284
- C:\Users\Admin\AppData\Local\Temp\svchosts.exe
  "C:\Users\Admin\AppData\Local\Temp\svchosts.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2592
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\,C:\Users\Admin\AppData\Roaming
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath C:\,C:\Users\Admin\AppData\Roaming
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1604
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C schtasks /create /tn svchosts /tr C:\Users\Admin\AppData\Roaming\svchosts.exe /sc onlogon
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1568
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn svchosts /tr C:\Users\Admin\AppData\Roaming\svchosts.exe /sc onlogon
      4⤵
      Creates scheduled task(s)
      PID:1792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\MicrosoftCompabilityTelemtry.exe

Filesize
45KB

MD5
fee8e7725f89e5b99e165996d89e0d29

SHA1
827fe03932f7c557703f62b4eec683eb1a14b9c2

SHA256
b56464ef35b43d5e04a3fe655c2e80567fa67acb396221357b852e04952d0809

SHA512
11adb2c2320c21848ecca24cc542a17fc7bf80e74ef54b4f7e1ec088af5614ad04db64ab3ae1b9a8bf7106aaa6355a8ef686b4839a5756405b76425edcf6685e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar1FE7.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchosts.exe

Filesize
12KB

MD5
0ade14069ec4dafe0f02c419da0f9ddd

SHA1
01fce38588ec0cbb6d17be718ba5867551180e32

SHA256
7df0b72ac5875dc5025d2f1e8d1eaa2cac1a4c58f2289603c852d2f9e191c948

SHA512
43e448d4bf3e25d6b154bf98da25dc183404ff35515029570f4554fa048d14ef208c4a8c7ac1024718abbb96c73c3e94ca8c5bcf8f8e8852c152b8c13959c92e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1890.tmp.bat

Filesize
172B

MD5
0957031fe874300fb62cd02c3b048aff

SHA1
372146ed0a6a4b4450b473c0f816dd855c463516

SHA256
f4e0984370c17cd279cd0f4d1d7e04d0e92d871b6171c0645d6360631f0f715c

SHA512
caeedb83e8151ab352a893fb694dc71c2b3edcfc3bf2f744552c579a31503fa31d20c29d126a423d0e5d2f1fa2396f9974355e245b7afcf086c1e2ebfa78cd37

Download Submit
memory/284-81-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/284-86-0x0000000004220000-0x0000000004260000-memory.dmp

Filesize
256KB

Download
memory/284-85-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/284-82-0x0000000004220000-0x0000000004260000-memory.dmp

Filesize
256KB

Download
memory/284-79-0x0000000000AC0000-0x0000000000AD2000-memory.dmp

Filesize
72KB

Download
memory/1604-71-0x000000006E9B0000-0x000000006EF5B000-memory.dmp

Filesize
5.7MB

Download
memory/1604-80-0x000000006E9B0000-0x000000006EF5B000-memory.dmp

Filesize
5.7MB

Download
memory/1604-73-0x000000006E9B0000-0x000000006EF5B000-memory.dmp

Filesize
5.7MB

Download
memory/1604-74-0x00000000005A0000-0x00000000005E0000-memory.dmp

Filesize
256KB

Download
memory/1604-75-0x00000000005A0000-0x00000000005E0000-memory.dmp

Filesize
256KB

Download
memory/1604-72-0x00000000005A0000-0x00000000005E0000-memory.dmp

Filesize
256KB

Download
memory/2208-0-0x00000000002B0000-0x00000000002C6000-memory.dmp

Filesize
88KB

Download
memory/2208-1-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2208-14-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2492-16-0x0000000000280000-0x0000000000292000-memory.dmp

Filesize
72KB

Download
memory/2492-30-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2492-20-0x0000000001D70000-0x0000000001DB0000-memory.dmp

Filesize
256KB

Download
memory/2492-18-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2592-15-0x0000000000DD0000-0x0000000000DDA000-memory.dmp

Filesize
40KB

Download
memory/2592-19-0x0000000000730000-0x0000000000770000-memory.dmp

Filesize
256KB

Download
memory/2592-83-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2592-84-0x0000000000730000-0x0000000000770000-memory.dmp

Filesize
256KB

Download
memory/2592-17-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download